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Registered Member #42796
Joined: Mon Jan 13 2014, 06:34PM
Location:
Posts: 195
hen918 wrote ...
Conundrum wrote ...
... The field would actually be quite weak (ie microamps) but steady and possible to generate from a simple hand wound device broadly similar to a flywheel, powering the light for several hours while the flywheel slowly wound down. ...
I don't think they had the bearing technology to allow flywheels to spin for any appreciable length of time (certainly not several hours)
the historians say that by the time the pyramids were built the Egyptians didn't even had wheal technology... but what do they know... the conspiracy theorists and the scandal media would come with a "special" material that they'll say was widely known to Egyptians or at least possible known that would enable bearing like technology to work without actually being a wheel...
joking aside... this thread had derailed so much that it should be moved to any random conspiracy forum out there... i'm not going to post any more replies on this thread because i don't want to cause a meaningless fight over personal beliefs regarding ancient civilizations..
Registered Member #96
Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4059
Not so sure, there have been some intriguing ideas raised. Certainly the "popular" explanation for the lack of carbon black in the Pyramids is that mirrors were used and this has been tested and found not to work. Some sort of GITD mineral is also feasible and over time the natural source would have been depleted in a similar way to ancient gold mines and other resources.
Last time I checked ZnS occurs naturally in some places and a fluke of geology could have allowed ZnS:x where x is a metal like copper to form in some long forgotten cave somewhere. This would glow nicely once charged up and provided you had the "secret" ie keeping it dry it would last for decades.
Some of the ideas could well be testable and maybe Mythbusters would take them on?
nb:
Also worth considering, a lot of our technology may be just as incomprehensible if found a few thousand years from now, a microSD chip with "32GB" inscribed on it would be totally unusable but clearly "the work of an advanced civilization" and items like valves would obviously not work either due to gas/cracking/etc.
If we ever do find any evidence that the ancient Egyptians had light bulbs or vacuum tubes they will probably have been filed under "Unknown" in some forgotten drawer in a museum somewhere. The tendency of a conquering army to destroy what they can't pillage is indeed unfortunate as many artifacts would have thus been melted down for the gold etc.
"I don't think they had the bearing technology to allow flywheels to spin for any appreciable length of time (certainly not several hours)"
You sure about that? Its not hard to make a basic low friction bearing using jewels such as sapphire (hard wearing) and a point which would have been trivial using etching of a hard metal such as bronze. I did actually toy with the idea of making a clock from scratch just for fun, and seeing if a simple electric mechanism would be more accurate than a mechanical one ie using carborundum negative resistance to drive the oscillator. To make a basic drive coil without enameled wire is actually easy if you use beeswax impregnated thin paper, and a multilayer coil with say 1mm wire wouldn't be that large. Lodestone for the rotating magnet and a few other trinkets and it would rival the accuracy of Harrison's "H3" with no troublesome mechanical tolerances to mess things up
Registered Member #3215
Joined: Sun Sept 19 2010, 08:42PM
Location:
Posts: 780
BigBad wrote ...
Shrad wrote ...
BigBad wrote ...
"lack of carbon black in the Pyramids" -reliable source?
I think they had a look at the ceilings...
No, I looked into it a bit, apparently people in modern times, have been doing this amazing thing called 'cleaning' the ceilings.
Also the pyramids weren't used for extended habitation anyway, so you wouldn't expect huge amounts of carbon black to be there.
I ask again, where's the reliable source on this?
I'd expect black patches under the places where they would have stayed for some minutes... if there were rituals, they would have make lighting stand at some places at least when awaiting for some action to take place
If you stay with a torch under a ceiling at least one minute your wife will tear you apart whatever the reason ;)
Anyway, nothing would be sure for something having occured that far in the past...
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Lost technology
